#970 single logging framework should be enforced

.gitignore

@@ -16,5 +16,4 @@ datanucleus.log
 /bin/
 /bin/
 *.log
-data-mapper/src/main/resources/log4j.xml
 event-sourcing/Journal.json

collection-pipeline/src/test/java/com/iluwatar/collectionpipeline/AppTest.java

@@ -30,12 +30,15 @@
 import java.util.Map;
 
 import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Tests that Collection Pipeline methods work as expected.
  */
 public class AppTest {
-
+  private static final Logger LOGGER = LoggerFactory.getLogger(AppTest.class);
+
   private List<Car> cars = CarFactory.createCars();
 
   @Test
@@ -61,7 +64,7 @@ public void testGetGroupingOfCarsByCategory() {
         new Car("Jeep", "Comanche", 1990, Category.JEEP)));
     Map<Category, List<Car>> modelsFunctional = FunctionalProgramming.getGroupingOfCarsByCategory(cars);
     Map<Category, List<Car>> modelsImperative = ImperativeProgramming.getGroupingOfCarsByCategory(cars);
-    System.out.println("Category " + modelsFunctional);
+    LOGGER.info("Category " + modelsFunctional);
     assertEquals(modelsExpected, modelsFunctional);
     assertEquals(modelsExpected, modelsImperative);
   }

commander/pom.xml

@@ -36,10 +36,5 @@
       <artifactId>junit-jupiter-engine</artifactId>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-      <version>1.2.17</version>
-    </dependency>
   </dependencies>
 </project>

commander/src/main/java/com/iluwatar/commander/Commander.java

@@ -23,7 +23,6 @@
 package com.iluwatar.commander;
 
 import java.util.ArrayList;
-import org.apache.log4j.Logger;
 import com.iluwatar.commander.employeehandle.EmployeeHandle;
 import com.iluwatar.commander.exceptions.DatabaseUnavailableException;
 import com.iluwatar.commander.exceptions.ItemUnavailableException;
@@ -37,6 +36,8 @@
 import com.iluwatar.commander.queue.QueueTask;
 import com.iluwatar.commander.queue.QueueTask.TaskType;
 import com.iluwatar.commander.shippingservice.ShippingService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  *<p>Commander pattern is used to handle all issues that can come up while making a
@@ -86,7 +87,7 @@ public class Commander {
   private final long messageTime;
   private final long employeeTime; 
   private boolean finalSiteMsgShown;
-  static final Logger LOG = Logger.getLogger(Commander.class);
+  static final Logger LOG = LoggerFactory.getLogger(Commander.class);
   //we could also have another db where it stores all orders
 
   Commander(EmployeeHandle empDb, PaymentService pService, ShippingService sService,
@@ -125,27 +126,27 @@ private void sendShippingRequest(Order order) throws Exception {
       String transactionId = shippingService.receiveRequest(order.item, order.user.address); 
       //could save this transaction id in a db too
       LOG.info("Order " + order.id + ": Shipping placed successfully, transaction id: " + transactionId);
-      System.out.println("Order has been placed and will be shipped to you. Please wait while we make your"
+      LOG.info("Order has been placed and will be shipped to you. Please wait while we make your"
           + " payment... "); 
       sendPaymentRequest(order);       
       return; 
     };
     Retry.HandleErrorIssue<Order> handleError = (o,err) -> {
       if (ShippingNotPossibleException.class.isAssignableFrom(err.getClass())) {
-        System.out.println("Shipping is currently not possible to your address. We are working on the problem "
+        LOG.info("Shipping is currently not possible to your address. We are working on the problem "
             + "and will get back to you asap.");
         finalSiteMsgShown = true;
         LOG.info("Order " + order.id + ": Shipping not possible to address, trying to add problem to employee db..");
         employeeHandleIssue(o);
       } else if (ItemUnavailableException.class.isAssignableFrom(err.getClass())) {
-        System.out.println("This item is currently unavailable. We will inform you as soon as the item becomes "
+        LOG.info("This item is currently unavailable. We will inform you as soon as the item becomes "
             + "available again.");
         finalSiteMsgShown = true;
         LOG.info("Order " + order.id + ": Item " + order.item + " unavailable, trying to add problem to employee "
             + "handle..");
         employeeHandleIssue(o);
       } else {
-        System.out.println("Sorry, there was a problem in creating your order. Please try later.");
+        LOG.info("Sorry, there was a problem in creating your order. Please try later.");
         LOG.error("Order " + order.id + ": Shipping service unavailable, order not placed..");
         finalSiteMsgShown = true;
       }
@@ -183,7 +184,7 @@ public void run() {
             order.paid = PaymentStatus.Done; 
             LOG.info("Order " + order.id + ": Payment successful, transaction Id: " + transactionId);
             if (!finalSiteMsgShown) { 
-              System.out.println("Payment made successfully, thank you for shopping with us!!"); 
+              LOG.info("Payment made successfully, thank you for shopping with us!!"); 
               finalSiteMsgShown = true; 
             } 
             sendSuccessMessage(order); 
@@ -193,7 +194,7 @@ public void run() {
         Retry.HandleErrorIssue<Order> handleError = (o,err) -> {
           if (PaymentDetailsErrorException.class.isAssignableFrom(err.getClass())) {
             if (!finalSiteMsgShown) {
-              System.out.println("There was an error in payment. Your account/card details may have been incorrect. "
+              LOG.info("There was an error in payment. Your account/card details may have been incorrect. "
                   + "Meanwhile, your order has been converted to COD and will be shipped.");
               finalSiteMsgShown = true;
             }
@@ -204,7 +205,7 @@ public void run() {
             try {
               if (o.messageSent.equals(MessageSent.NoneSent)) {
                 if (!finalSiteMsgShown) {
-                  System.out.println("There was an error in payment. We are on it, and will get back to you "
+                  LOG.info("There was an error in payment. We are on it, and will get back to you "
                       + "asap. Don't worry, your order has been placed and will be shipped.");
                   finalSiteMsgShown = true;
                 }

commander/src/main/java/com/iluwatar/commander/messagingservice/MessagingService.java

@@ -24,6 +24,8 @@
 
 import com.iluwatar.commander.Service;
 import com.iluwatar.commander.exceptions.DatabaseUnavailableException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * The MessagingService is used to send messages to user regarding their order and 
@@ -32,6 +34,7 @@
  */
 
 public class MessagingService extends Service {
+  private static final Logger LOGGER = LoggerFactory.getLogger(MessagingService.class);
 
   enum MessageToSend {
     PaymentFail, PaymentTrying, PaymentSuccessful
@@ -74,7 +77,7 @@ protected String updateDb(Object...parameters) throws DatabaseUnavailableExcepti
     MessageRequest req = (MessageRequest) parameters[0];
     if (this.database.get(req.reqId) == null) { //idempotence, in case db fails here
       database.add(req); //if successful:
-      System.out.println(sendMessage(req.msg));
+      LOGGER.info(sendMessage(req.msg));
       return req.reqId;
     }
     return null;

converter/src/main/java/com/iluwatar/converter/App.java

@@ -24,6 +24,8 @@
 
 
 import com.google.common.collect.Lists;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -35,6 +37,8 @@
  * objects between types.
  */
 public class App {
+
+  private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
   /**
    * Program entry point
    *
@@ -45,16 +49,16 @@ public static void main(String[] args) {
 
     UserDto dtoUser = new UserDto("John", "Doe", true, "whatever[at]wherever.com");
     User user = userConverter.convertFromDto(dtoUser);
-    System.out.println("Entity converted from DTO:" + user);
+    LOGGER.info("Entity converted from DTO:" + user);
 
     ArrayList<User> users = Lists.newArrayList(new User("Camile", "Tough", false, "124sad"),
         new User("Marti", "Luther", true, "42309fd"), new User("Kate", "Smith", true, "if0243"));
-    System.out.println("Domain entities:");
-    users.forEach(System.out::println);
+    LOGGER.info("Domain entities:");
+    users.stream().map(User::toString).forEach(LOGGER::info);
 
-    System.out.println("DTO entities converted from domain:");
+    LOGGER.info("DTO entities converted from domain:");
     List<UserDto> dtoEntities = userConverter.createFromEntities(users);
-    dtoEntities.forEach(System.out::println);
+    dtoEntities.stream().map(UserDto::toString).forEach(LOGGER::info);
 
   }
 }

dao/pom.xml

@@ -40,10 +40,6 @@
       <artifactId>junit-jupiter-engine</artifactId>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-    </dependency>
     <dependency>
         <groupId>com.h2database</groupId>
         <artifactId>h2</artifactId>
@@ -53,49 +49,4 @@
         <artifactId>mockito-core</artifactId>
     </dependency>
   </dependencies>
-
-  <build>
-
-    <!-- 
-    log4j.xml file will be copied both in ${project.build.outputDirectory} 
-    and ${project.build.directory}. Thanks to Sean Patrick Floyd 
-    (http://stackoverflow.com/questions/5637532/maven-how-to-place-resource-file-together-with-jar) 
-    -->
-
-    <resources>
-      <resource> <!-- regular processing for every resource file -->
-        <directory>src/main/resources</directory>
-      </resource>
-      <resource> <!-- processing with a different output directory for log4j.xml -->
-        <directory>src/main/resources</directory>
-        <includes>
-          <include>log4j.xml</include>
-        </includes>
-        <targetPath>..</targetPath> <!-- relative to target/classes i.e. ${project.build.directory} -->
-      </resource>
-    </resources>
-
-    <plugins>
-
-      <!-- 
-      This will exclude log4j.xml file from generated JAR 
-      -->
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-jar-plugin</artifactId>
-        <version>2.6</version>
-        <configuration>
-          <excludes>
-            <exclude>log4j.xml</exclude>
-          </excludes>
-          <archive>
-            <manifest>
-              <addClasspath>true</addClasspath>
-            </manifest>
-          </archive>
-        </configuration>
-      </plugin>
-
-    </plugins>
-  </build>
 </project>

dao/src/main/java/com/iluwatar/dao/App.java

@@ -31,8 +31,9 @@
 
 import javax.sql.DataSource;
 
-import org.apache.log4j.Logger;
 import org.h2.jdbcx.JdbcDataSource;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Data Access Object (DAO) is an object that provides an abstract interface to some type of
@@ -50,7 +51,7 @@
  */
 public class App {
   private static final String DB_URL = "jdbc:h2:~/dao";
-  private static Logger log = Logger.getLogger(App.class);
+  private static Logger log = LoggerFactory.getLogger(App.class);
   private static final String ALL_CUSTOMERS = "customerDao.getAllCustomers(): ";
 
   /**
@@ -94,7 +95,7 @@ private static void performOperationsUsing(final CustomerDao customerDao) throws
     addCustomers(customerDao);
     log.info(ALL_CUSTOMERS);
     try (Stream<Customer> customerStream = customerDao.getAll()) {
-      customerStream.forEach((customer) -> log.info(customer));
+      customerStream.forEach((customer) -> log.info(customer.toString()));
     }
     log.info("customerDao.getCustomerById(2): " + customerDao.getById(2));
     final Customer customer = new Customer(4, "Dan", "Danson");
@@ -105,7 +106,7 @@ private static void performOperationsUsing(final CustomerDao customerDao) throws
     customerDao.update(customer);
     log.info(ALL_CUSTOMERS);
     try (Stream<Customer> customerStream = customerDao.getAll()) {
-      customerStream.forEach((cust) -> log.info(cust));
+      customerStream.forEach((cust) -> log.info(cust.toString()));
     }
     customerDao.delete(customer);
     log.info(ALL_CUSTOMERS + customerDao.getAll());

dao/src/main/java/com/iluwatar/dao/DbCustomerDao.java

@@ -22,6 +22,9 @@
  */
 package com.iluwatar.dao;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
@@ -35,15 +38,13 @@
 
 import javax.sql.DataSource;
 
-import org.apache.log4j.Logger;
-
 /**
  * An implementation of {@link CustomerDao} that persists customers in RDBMS.
  *
  */
 public class DbCustomerDao implements CustomerDao {
 
-  private static final Logger LOGGER = Logger.getLogger(DbCustomerDao.class);
+  private static final Logger LOGGER = LoggerFactory.getLogger(DbCustomerDao.class);
 
   private final DataSource dataSource;